How to create Pro Sites registration page?

Hi, I just installed Pro Sites, configured the settings, and I don't see a registration page. All I see if I logout is this page that asks me to login:

How do I create the registration page? Do I need to enter Paypal API details first?

I'm excited about using this plugin, but I must say the documentation is very disappointing. There are not even simple instructions on how to set this plugin up, there is only an overview video and brief text of what options you have. Better documentation would cut down on your support, it's worth the time.